epithelium
   |__epithelial tube
       |__gut epithelial section  1629 rec.
           |__adult anterior midgut epithelium 42 rec.
           |__adult esophagus epithelium 6 rec.
           |__adult proventriculus epithelium 16 rec.
           |   |__adult proventriculus epithelial zone 1
           |   |__adult proventriculus epithelial zone 2
           |   |__adult proventriculus epithelial zone 3
           |   |__adult proventriculus epithelial zone 4
           |   |__adult proventriculus epithelial zone 5
           |   |__adult proventriculus epithelial zone 5.5
           |   |__adult proventriculus epithelial zone 6
           |   |__adult proventriculus inner layer
           |   |__adult proventriculus intermediate layer
           |   |__adult proventriculus outer layer
           |__adult pyloric epithelium 15 rec.
           |__foregut epithelium 25 rec.
           |   |__adult foregut epithelium 22 rec.
           |   |__embryonic/larval foregut epithelium
           |__hindgut epithelium 46 rec.
           |   |__adult hindgut epithelium 33 rec.
           |   |__embryonic/larval hindgut epithelium 14 rec.
           |__midgut epithelium 1543 rec.
           |   |__adult midgut epithelium 1252 rec.
           |   |__larval midgut epithelium 184 rec.
           |__proventriculus inner layer 3 rec.
           |   |__adult proventriculus inner layer
           |   |__embryonic/larval proventriculus inner layer
           |__proventriculus intermediate layer 2 rec.
           |   |__adult proventriculus intermediate layer
           |   |__embryonic/larval proventriculus intermediate layer 1 rec.
           |__proventriculus outer layer 16 rec.
               |__adult proventriculus outer layer
               |__embryonic/larval proventriculus outer layer 12 rec.